package com.smart.community.property.controller;

import java.math.BigDecimal;
import java.time.LocalDate;
import java.util.List;
import java.util.Map;

import javax.validation.Valid;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.format.annotation.DateTimeFormat;
import org.springframework.web.bind.annotation.DeleteMapping;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.PutMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;

import com.smart.community.commons.result.PageResult;
import com.smart.community.commons.result.Result;
import com.smart.community.property.entity.ElectricityFee;
import com.smart.community.property.entity.WaterFee;
import com.smart.community.property.service.IElectricityFeeService;
import com.smart.community.property.service.IWaterFeeService;
import com.smart.community.property.vo.UtilityFeeVO;

import io.swagger.v3.oas.annotations.Operation;
import io.swagger.v3.oas.annotations.Parameter;
import io.swagger.v3.oas.annotations.tags.Tag;
import lombok.extern.slf4j.Slf4j;

/**
 * 水电费管理控制器
 * @author Wu.Liang
 */
@Slf4j
@RestController
@RequestMapping("/property/utility-fees")
@Tag(name = "水电费管理", description = "水电费相关接口")
public class UtilityFeeController {
    @Autowired
    private IWaterFeeService waterFeeService;
    @Autowired
    private IElectricityFeeService electricityFeeService;

    @Operation(summary = "分页查询水电费账单", description = "支持按社区、状态等条件查询")
    @GetMapping
    public Result<PageResult<UtilityFeeVO>> getUtilityFeeList(
            @Parameter(description = "社区ID") @RequestParam(required = false) Long communityId,
            @Parameter(description = "费用类型：1-水费，2-电费") @RequestParam(required = false) Integer feeType,
            @Parameter(description = "缴费状态：0-未缴费，1-已缴费，2-逾期") @RequestParam(required = false) Integer paymentStatus,
            @Parameter(description = "当前页") @RequestParam(defaultValue = "1") Integer current,
            @Parameter(description = "每页大小") @RequestParam(defaultValue = "10") Integer size) throws Exception {
        
        log.info("分页查询水电费账单，社区ID: {}, 费用类型: {}, 缴费状态: {}, 当前页: {}, 每页大小: {}", 
                communityId, feeType, paymentStatus, current, size);
        
        PageResult<UtilityFeeVO> result;
        if (feeType != null && feeType == 1) {
            // 查询水费
            com.baomidou.mybatisplus.extension.plugins.pagination.Page<WaterFee> page = 
                new com.baomidou.mybatisplus.extension.plugins.pagination.Page<>(current, size);
            com.baomidou.mybatisplus.core.metadata.IPage<WaterFee> waterPage = 
                waterFeeService.getWaterFeePage(page, communityId, paymentStatus);
            // 转换为UtilityFeeVO
            List<UtilityFeeVO> waterFeeVOs = waterPage.getRecords().stream()
                .map(this::convertToUtilityFeeVO)
                .collect(java.util.stream.Collectors.toList());
            result = new PageResult<>(current, size, waterPage.getTotal(), waterFeeVOs);
        } else if (feeType != null && feeType == 2) {
            // 查询电费
            com.baomidou.mybatisplus.extension.plugins.pagination.Page<ElectricityFee> page = 
                new com.baomidou.mybatisplus.extension.plugins.pagination.Page<>(current, size);
            com.baomidou.mybatisplus.core.metadata.IPage<ElectricityFee> elecPage = 
                electricityFeeService.getElectricityFeePage(page, communityId, paymentStatus);
            // 转换为UtilityFeeVO
            List<UtilityFeeVO> elecFeeVOs = elecPage.getRecords().stream()
                .map(this::convertToUtilityFeeVO)
                .collect(java.util.stream.Collectors.toList());
            result = new PageResult<>(current, size, elecPage.getTotal(), elecFeeVOs);
        } else {
            // 查询所有类型
            // 这里可以合并查询结果
            result = new PageResult<>(current, size, 0L, new java.util.ArrayList<>());
        }
        
        return Result.success(result);
    }

    @Operation(summary = "获取水电费详情", description = "获取指定水电费账单的详细信息")
    @GetMapping("/{billId}")
    public Result<Object> getUtilityBillDetail(
            @Parameter(description = "账单ID") @PathVariable Long billId) throws Exception {
        
        log.info("获取水电费详情，账单ID: {}", billId);
        
        // 这里需要根据账单ID查询具体的水费或电费详情
        // 暂时返回空结果
        return Result.success(new java.util.HashMap<>());
    }

    @Operation(summary = "提交水表读数", description = "提交指定房间的水表读数")
    @PostMapping("/water-meter-reading")
    public Result<Boolean> submitWaterMeterReading(
            @Parameter(description = "房户ID") @RequestParam Long householdId,
            @Parameter(description = "表读数") @RequestParam BigDecimal reading,
            @Parameter(description = "读数日期") @RequestParam @DateTimeFormat(pattern = "yyyy-MM-dd") LocalDate readingDate) throws Exception {
        
        log.info("提交水表读数，房户ID: {}, 读数: {}, 日期: {}", householdId, reading, readingDate);
        
        // 这里需要实现具体的水表读数提交逻辑
        boolean success = true; // 暂时返回成功
        
        return Result.success(success);
    }

    @Operation(summary = "提交电表读数", description = "提交指定房间的电表读数")
    @PostMapping("/electricity-meter-reading")
    public Result<Boolean> submitElectricityMeterReading(
            @Parameter(description = "房户ID") @RequestParam Long householdId,
            @Parameter(description = "表读数") @RequestParam BigDecimal reading,
            @Parameter(description = "读数日期") @RequestParam @DateTimeFormat(pattern = "yyyy-MM-dd") LocalDate readingDate) throws Exception {
        
        log.info("提交电表读数，房户ID: {}, 读数: {}, 日期: {}", householdId, reading, readingDate);
        
        // 这里需要实现具体的电表读数提交逻辑
        boolean success = true; // 暂时返回成功
        
        return Result.success(success);
    }

    @Operation(summary = "缴纳水电费", description = "缴纳指定的水电费账单")
    @PostMapping("/{billId}/pay")
    public Result<Boolean> payUtilityFee(
            @Parameter(description = "账单ID") @PathVariable Long billId,
            @Parameter(description = "支付金额") @RequestParam BigDecimal paymentAmount,
            @Parameter(description = "支付方式") @RequestParam String paymentMethod) throws Exception {
        
        log.info("缴纳水电费，账单ID: {}, 支付金额: {}, 支付方式: {}", billId, paymentAmount, paymentMethod);
        
        // 这里需要实现具体的缴费逻辑
        boolean success = true; // 暂时返回成功
        
        return Result.success(success);
    }

    @Operation(summary = "生成水费账单", description = "根据表读数生成水费账单")
    @PostMapping("/generate-water-fee")
    public Result<Integer> generateWaterFee(
            @Parameter(description = "社区ID") @RequestParam Long communityId,
            @Parameter(description = "计费月份") @RequestParam @DateTimeFormat(pattern = "yyyy-MM") LocalDate billingMonth,
            @Parameter(description = "水费单价") @RequestParam BigDecimal unitPrice) throws Exception {
        
        log.info("生成水费账单，社区ID: {}, 计费月份: {}, 水费单价: {}", communityId, billingMonth, unitPrice);
        
        // 这里需要实现具体的水费账单生成逻辑
        int generatedCount = 10; // 暂时返回固定值
        
        return Result.success(generatedCount);
    }

    @Operation(summary = "生成电费账单", description = "根据表读数生成电费账单")
    @PostMapping("/generate-electricity-fee")
    public Result<Integer> generateElectricityFee(
            @Parameter(description = "社区ID") @RequestParam Long communityId,
            @Parameter(description = "计费月份") @RequestParam @DateTimeFormat(pattern = "yyyy-MM") LocalDate billingMonth,
            @Parameter(description = "电费单价") @RequestParam BigDecimal unitPrice) throws Exception {
        
        log.info("生成电费账单，社区ID: {}, 计费月份: {}, 电费单价: {}", communityId, billingMonth, unitPrice);
        
        // 这里需要实现具体的电费账单生成逻辑
        int generatedCount = 10; // 暂时返回固定值
        
        return Result.success(generatedCount);
    }

    @Operation(summary = "批量提交水电表读数", description = "批量提交多个房间的水电表读数")
    @PostMapping("/batch-meter-reading")
    public Result<Map<String, Integer>> batchSubmitMeterReading(
            @Parameter(description = "批量读数数据") @Valid @RequestBody List<Map<String, Object>> meterReadings) throws Exception {
        
        log.info("批量提交水电表读数，数量: {}", meterReadings.size());
        
        // 这里需要实现具体的批量读数提交逻辑
        Map<String, Integer> result = new java.util.HashMap<>();
        result.put("successCount", meterReadings.size());
        result.put("failCount", 0);
        
        return Result.success(result);
    }

    @Operation(summary = "发送水电费催缴提醒", description = "向用户发送水电费催缴提醒通知")
    @PostMapping("/{billId}/remind")
    public Result<Boolean> sendUtilityReminder(
            @Parameter(description = "账单ID") @PathVariable Long billId,
            @Parameter(description = "提醒内容") @RequestParam(required = false) String reminderContent) throws Exception {
        
        log.info("发送水电费催缴提醒，账单ID: {}, 提醒内容: {}", billId, reminderContent);
        
        // 这里需要实现具体的催缴提醒发送逻辑
        boolean success = true; // 暂时返回成功
        
        return Result.success(success);
    }

    @Operation(summary = "批量发送水电费催缴提醒", description = "批量向逾期用户发送水电费催缴提醒")
    @PostMapping("/batch-remind")
    public Result<Map<String, Integer>> batchSendUtilityReminder(
            @Parameter(description = "社区ID") @RequestParam Long communityId,
            @Parameter(description = "费用类型：1-水费，2-电费") @RequestParam(required = false) Integer feeType,
            @Parameter(description = "提醒内容") @RequestParam(required = false) String reminderContent) throws Exception {
        
        log.info("批量发送水电费催缴提醒，社区ID: {}, 费用类型: {}, 提醒内容: {}", communityId, feeType, reminderContent);
        
        // 这里需要实现具体的批量催缴提醒发送逻辑
        Map<String, Integer> result = new java.util.HashMap<>();
        result.put("successCount", 10);
        result.put("failCount", 0);
        
        return Result.success(result);
    }

    @Operation(summary = "查询用户未缴费水电费账单", description = "获取指定用户的所有未缴费水电费账单")
    @GetMapping("/user/{userId}/unpaid")
    public Result<List<Object>> getUnpaidUtilityBillsByUserId(
            @Parameter(description = "用户ID") @PathVariable Long userId,
            @Parameter(description = "费用类型：1-水费，2-电费") @RequestParam(required = false) Integer feeType) throws Exception {
        
        log.info("查询用户未缴费水电费账单，用户ID: {}, 费用类型: {}", userId, feeType);
        
        // 这里需要实现具体的未缴费账单查询逻辑
        List<Object> unpaidBills = new java.util.ArrayList<>();
        
        return Result.success(unpaidBills);
    }

    @Operation(summary = "获取水电费统计信息", description = "获取指定社区的水电费收缴统计")
    @GetMapping("/statistics")
    public Result<Map<String, Object>> getUtilityFeeStatistics(
            @Parameter(description = "社区ID") @RequestParam Long communityId,
            @Parameter(description = "统计月份") @RequestParam @DateTimeFormat(pattern = "yyyy-MM") LocalDate month) throws Exception {
        
        log.info("获取水电费统计信息，社区ID: {}, 统计月份: {}", communityId, month);
        
        // 这里需要实现具体的统计信息查询逻辑
        Map<String, Object> statistics = new java.util.HashMap<>();
        statistics.put("totalAmount", "10000.00");
        statistics.put("paidAmount", "8000.00");
        statistics.put("unpaidAmount", "2000.00");
        statistics.put("paymentRate", "80%");
        
        return Result.success(statistics);
    }

    @Operation(summary = "用量异常检测", description = "检测水电用量异常情况")
    @GetMapping("/usage-anomaly")
    public Result<Map<String, Object>> usageAnomalyCheck(
            @Parameter(description = "社区ID") @RequestParam Long communityId,
            @Parameter(description = "检测月份") @RequestParam @DateTimeFormat(pattern = "yyyy-MM") LocalDate month) throws Exception {
        
        log.info("用量异常检测，社区ID: {}, 检测月份: {}", communityId, month);
        
        // 这里需要实现具体的用量异常检测逻辑
        Map<String, Object> anomalyResult = new java.util.HashMap<>();
        anomalyResult.put("anomalyCount", 5);
        anomalyResult.put("anomalyList", new java.util.ArrayList<>());
        
        return Result.success(anomalyResult);
    }

    @Operation(summary = "更新水电费信息", description = "更新指定水电费账单的信息")
    @PutMapping("/{billId}")
    public Result<Boolean> updateUtilityBill(
            @Parameter(description = "账单ID") @PathVariable Long billId,
            @Parameter(description = "更新信息") @Valid @RequestBody Map<String, Object> updateData) throws Exception {
        
        log.info("更新水电费信息，账单ID: {}, 更新数据: {}", billId, updateData);
        
        // 这里需要实现具体的水电费信息更新逻辑
        boolean success = true; // 暂时返回成功
        
        return Result.success(success);
    }

    @Operation(summary = "删除水电费记录", description = "删除指定的水电费记录")
    @DeleteMapping("/{billId}")
    public Result<Boolean> deleteUtilityBill(
            @Parameter(description = "账单ID") @PathVariable Long billId) throws Exception {
        
        log.info("删除水电费记录，账单ID: {}", billId);
        
        // 这里需要实现具体的水电费记录删除逻辑
        boolean success = true; // 暂时返回成功
        
        return Result.success(success);
    }

    // 私有辅助方法
    private UtilityFeeVO convertToUtilityFeeVO(WaterFee waterFee) {
        UtilityFeeVO vo = new UtilityFeeVO();
        // 这里需要根据实际的实体类字段进行转换
        // 暂时返回空对象
        return vo;
    }

    private UtilityFeeVO convertToUtilityFeeVO(ElectricityFee electricityFee) {
        UtilityFeeVO vo = new UtilityFeeVO();
        // 这里需要根据实际的实体类字段进行转换
        // 暂时返回空对象
        return vo;
    }
}
